全文获取类型
收费全文 | 6265篇 |
免费 | 339篇 |
国内免费 | 35篇 |
专业分类
耳鼻咽喉 | 309篇 |
儿科学 | 81篇 |
妇产科学 | 67篇 |
基础医学 | 1000篇 |
口腔科学 | 120篇 |
临床医学 | 333篇 |
内科学 | 1415篇 |
皮肤病学 | 74篇 |
神经病学 | 664篇 |
特种医学 | 196篇 |
外科学 | 831篇 |
综合类 | 60篇 |
预防医学 | 209篇 |
眼科学 | 56篇 |
药学 | 607篇 |
中国医学 | 17篇 |
肿瘤学 | 600篇 |
出版年
2023年 | 31篇 |
2022年 | 73篇 |
2021年 | 125篇 |
2020年 | 72篇 |
2019年 | 90篇 |
2018年 | 101篇 |
2017年 | 82篇 |
2016年 | 104篇 |
2015年 | 90篇 |
2014年 | 138篇 |
2013年 | 175篇 |
2012年 | 258篇 |
2011年 | 347篇 |
2010年 | 148篇 |
2009年 | 146篇 |
2008年 | 275篇 |
2007年 | 292篇 |
2006年 | 278篇 |
2005年 | 326篇 |
2004年 | 325篇 |
2003年 | 279篇 |
2002年 | 247篇 |
2001年 | 245篇 |
2000年 | 243篇 |
1999年 | 213篇 |
1998年 | 76篇 |
1997年 | 76篇 |
1996年 | 86篇 |
1995年 | 54篇 |
1994年 | 66篇 |
1993年 | 65篇 |
1992年 | 167篇 |
1991年 | 152篇 |
1990年 | 143篇 |
1989年 | 124篇 |
1988年 | 118篇 |
1987年 | 114篇 |
1986年 | 115篇 |
1985年 | 98篇 |
1984年 | 70篇 |
1983年 | 56篇 |
1982年 | 36篇 |
1981年 | 24篇 |
1980年 | 24篇 |
1979年 | 39篇 |
1978年 | 26篇 |
1977年 | 31篇 |
1974年 | 23篇 |
1973年 | 18篇 |
1971年 | 20篇 |
排序方式: 共有6639条查询结果,搜索用时 10 毫秒
1.
Yamaoka Mai Yoshida Mahoko Nakashima Ayumu Doi Shigehiro Naito Takayuki Masaki Takao 《Clinical and experimental nephrology》2022,26(11):1111-1118
Clinical and Experimental Nephrology - The association between N-terminal pro-brain natriuretic peptide (NT-proBNP) and stroke in Japanese hemodialysis (HD) outpatients is unclear. Therefore, in... 相似文献
2.
3.
Prognostic factors in the treatment of hepatocellular carcinoma with transcatheter arterial embolization and arterial infusion. 总被引:8,自引:0,他引:8
Y Yamashita M Takahashi Y Koga R Saito S Nanakawa Y Hatanaka N Sato K Nakashima J Urata K Yoshizumi 《Cancer》1991,67(2):385-391
From January 1986 to December 1988, a prospective trial of transcatheter arterial treatment was carried out for hepatocellular carcinoma (HCC). Two hundred seventy-five patients were included. Okuda's staging system was employed. Patients with Stage I and II HCC were treated by transcatheter arterial embolization (TAE) with a gelatin sponge containing an anti-cancer agent (protocol 1a); a gelatin sponge and iodized oil mixed with an anti-cancer agent (protocol 1b); or iodized oil mixed with an anti-cancer agent (protocol 2). Patients with Stage III HCC were treated with iodized oil with anti-cancer agent (protocol 2). As an exception, patients with an unsuccessful superselective catheterization into the proper hepatic artery by Seldinger technique or obstruction of the main trunk of the portal vein were treated with percutaneous transcatheter arterial infusion into the common hepatic artery regardless of stage (protocol 3). Tumor type and extension, area of tumor involvement, portal vein involvement, method of treatment, and presence of ascites and icterus were found to be the significant factors for an initial response to therapy. Treatment method was the most important factor. Respective survival rates at 1 and 2 years were 70.9% and 55.3% for protocol 1a; 62.3% and 43.8% for protocol 1b; 37.8% and 18.3% for protocol 2; and 16.5% and 0% for protocol 3. Many factors proved to significantly influenced prognosis; however, tumor type had the most important prognostic significance followed by AFP value, ascites, treatment protocol, and area of tumor involvement. 相似文献
4.
5.
6.
Patients with head injury may experience olfactory dysfunction. Unfortunately, little is known about changes in the olfactory neuroepithelium caused by intracranial olfactory nerve injury and hemorrhage. We performed olfactory nerve section or bulbectomy in 53 Mongolian gerbils and subjected the olfactory neuroepithelium to immunohistochemical analysis. A decrease or disappearance of the antiserum to an olfactory marker protein containing olfactory receptor neurons was evident in the sectioned group. Degeneration of the olfactory neuroepithelium contralateral to olfactory nerve injury was also noted in animals with perineural hemorrhage. These findings suggest that olfactory dysfunction may occur not only with nerve injury but also secondary to intracranial hemorrhage. 相似文献
7.
Teruyuki Usuba Yutaka Suzuki Akira Kuramochi Hisao Tajiri Katsuhiko Yanaga 《Digestive endoscopy》2007,19(1):18-21
Background: Buried bumper syndrome (BBS) is a rare complication of percutaneous endoscopic gastrostomy (PEG). Along with the widespread use of the button‐type kit, BBS is encountered frequently. Methods: In the present study, we examined causes and treatments for BBS among 1400 patients who had undergone PEG. Results: The causes of BBS after PEG were classified into two categories: early causes consisted of wound infection, inappropriate size of kit and severe lordosis, while late causes were inappropriate exchange of kit, rough management or weight gain. The treatments for BBS could be determined by the degree of wound infection, fistula and burial of the bumper. Conclusion: We prepared a flowchart for replacement, by which BBS can be managed safely and quickly without surgical or endoscopic intervention. 相似文献
8.
Neoplastic angioendotheliosis has rarely been described as a respiratory disease. A patient is described with pulmonary vascular involvement induced by neoplastic angioendotheliosis in pulmonary vessels. 相似文献
9.
Y. Mikawa R. Watanabe Y. Nakashima T. Hayashida 《Archives of orthopaedic and trauma surgery》1997,116(1-2):112-115
Spinal cord compression is an extremely serious complication of hereditary multiple exostoses (HME). A case of HME with compression of the cervical spinal cord is reported. Complete recovery following surgery was achieved. A review of the relevant literature revealed 51 previous cases of HME with cord/cauda equina compression. Most patients were under 30 years of age with more men affected than women. The family history was positive in 60%. The cervical and thoracic areas were predominantly affected, with the symptoms usually developing slowly. Recovery following surgery is to be expected in the majority of cases. In patients with HME and suffering from neurological symptoms, the possibility of spinal cord compression should be considered. Prompt diagnosis and surgical excision provide the best prognosis. 相似文献
10.
Our aim was to find a simple method of removing labile glycosylated hemoglobin (HbA1c) from blood samples before it is measured by cation-exchange chromatography. Labile HbA1c is formed by the binding of glucose to the NH2-terminal valine of the beta-chain of HbA. We sought a more competitive binder for the same site to dissociate labile HbA1c to glucose and HbA. Inorganic phosphates were found to have a strong allosteric effect and a great ability to eliminate labile HbA1c. We developed our method with 4 mM tetrapolyphosphate in the hemolyzing solution to eliminate labile HbA1c during the automatic processing (at pH 6 and heated for 2 min at 45 degrees C) of blood samples for HbA1c estimation. This may be useful when estimating HbA1c by the manual method. 相似文献